Just wonderin' . . . would ANY tank bag be "safe" for matte or satin tanks?
Put an OEM tank bag on my non-matte/satin tank about eight years ago; kinda never took it off--don't know how safe that application might be.
The tank bag's quite serviceable, regardless; expandable, provides ready access to fuel tank cap opening without undoing anything.
Rode a Versys a couple of thousand miles with a great big premium Wolfman aftermarket tank bag; marvelous piece of luggage, but . . . had to un-Velcro straps at every fuel stop. No idea if such a bag would be kinder to your tank finish than an OEM bag; you might contact the manufacturer with a query.